3 sentences

1. 秦始皇统一了度量衡。

   Qín Shǐ​huáng tǒng​yī le dù​liàng​héng.

   Qin Shi Huang standardized weights and measures.

   Source: Dong Chinese Dictionary

2. 秦始皇在全国范围内统一了度量衡制度。

   Qín Shǐ​huáng zài quán​guó fàn​wéi nèi tǒng​yī le dù​liàng​héng zhì​dù.

   Qin Shi Huang unified the system of weights and measures throughout the country.

   Source: Dong Chinese Dictionary

3. 在古代度量衡中，京是一个极大的计数单位。

   zài gǔ​dài dù​liàng​héng zhōng, jīng shì yī gè jí​dà de jì​shù dān​wèi.

   In ancient weights and measures, 'jing' was an extremely large unit of counting.

   Source: Dong Chinese Dictionary